Saitama, Japan
Saitama, Japan

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The present invention is directed to a nonaqueous pressure-sensitive adhesive that may be used in medicinal tape preparations for percutaneous absorption. The adhesive may comprise a copolymer obtained by copolymerization of a (meth)acrylic monomer having an acetoacetyl group in the molecule and one or more monomers from among other (meth)acrylic monomers without acetoacetyl groups and copolymerizable vinyl monomers, in a nonaqueous solvent. Suitable (meth)acrylic monomers having an acetoacetyl group in the molecule are acetoacetoxyalkyl methacrylates, and especially 2-acetoacetoxyethyl methacrylate. The pressure-sensitive adhesive of the invention uses no polyamine derivatives, isocyanate compounds, polyvalent metal chelate compounds, etc., as crosslinking agents, and therefore toxicity is not a concern and skin is not irritated. A medicinal tape preparation for percutaneous absorption of the invention has superior adhesive strength and cohesive strength, and is highly safe with low skin irritation. It also has excellent drug release and percutaneous absorption properties.


Patent
NIPRO Patch Co. | Date: 2015-07-15

The purpose of the present invention is to provide a rivastigmine-containing adhesive skin patch which has excellent transdermal permeability of rivastigmine contained therein and has excellent adhesion performance. The present invention provides an adhesive skin patch comprising a support and an adhesive agent layer arranged on the support, wherein the adhesive agent layer contains at least rivastigmine and/or a pharmaceutically acceptable salt thereof and a specific acrylic adhesive agent. The adhesive skin patch according to the present invention may be composed of only the support and the adhesive agent layer. The adhesive agent layer may have a single-layered structure.


Patent
Nipro Patch Co. | Date: 2013-09-02

The purpose of the present invention is to provide a rivastigmine-containing adhesive skin patch which has excellent transdermal permeability of rivastigmine contained therein and has excellent adhesion performance. The present invention provides an adhesive skin patch comprising a support and an adhesive agent layer arranged on the support, wherein the adhesive agent layer contains at least rivastigmine and/or a pharmaceutically acceptable salt thereof and a specific acrylic adhesive agent. The adhesive skin patch according to the present invention may be composed of only the support and the adhesive agent layer. The adhesive agent layer may have a single-layered structure.


Patent
NIPRO Patch Co. | Date: 2012-07-18

Disclosed is a transdermally absorbable preparation, in which an adhesive agent produced by crosslinking at least one copolymer is contained in an adhesive layer and the aging period in the production of the adhesive layer can be shortened. The transdermally absorbable preparation comprises a support and an adhesive layer arranged on the support and containing an adhesive agent and a medicinal component. The transdermally absorbable preparation is characterized in that the adhesive agent comprises a resin mixture comprising 100 parts by mass of a specific acrylic copolymer (A) and 0.1 to 30 parts by mass of a specific acrylic copolymer (B) or 0.05 to 2 part(s) by mass of a polyamine compound, and the adhesive layer additionally contains an organic acid.


Patent
NIPRO Patch Co. | Date: 2014-07-02

The purpose of the present invention is to provide a hydrous adhesive skin patch which contains lidocaine and can be applied in a uniform thickness easily. This hydrous adhesive skin patch comprises a support and an adhesive agent layer arranged on the support, wherein lidocaine or a pharmacologically acceptable salt thereof, a hydrophilic adhesive agent, and diethylene glycol or a diethylene glycol monoalkyl ether are contained in the adhesive agent layer. The diethylene glycol monoalkyl ether is preferably at least one compound selected from the group consisting of diethylene glycol monomethyl ether, diethylene glycol monoethyl ether and diethylene glycol monobutyl ether.


Disclosed are a pharmaceutical composition for external application, an adhesive skin patch and others which are improved in a drug release property, transdermal absorbability and stability of a pharmacologically active ingredient contained therein and can reduce the aggravation of irritation to the skin. Specifically disclosed is an adhesive skin patch comprising a support and an adhesive layer laminated on the support, wherein the adhesive layer contains a pharmaceutical composition for external application. The pharmaceutical composition for external application comprises a pharmacologically active ingredient, an auxiliary component and a pyrrolidone compound, wherein one of the pharmacologically active ingredient and the auxiliary component has a carboxylate group in the molecule and the other has a hydroxy group in the molecule. Preferably, the adhesive layer further comprises a hydrogenated oil.


Patent
Nipro Patch Co. | Date: 2013-12-26

The objective of the present invention is to provide a method of preventing an oxygen-caused alteration of a drug in an adhesive patch enclosed inside a packaging container. The present invention is a package body comprising a packaging container and a drug-containing adhesive patch enclosed inside the packaging container, wherein the amount of oxygen gas inside the package body is 20 L or less, and the concentration of oxygen gas is 17.0 to 25.0 vol %. This packaging does not have to contain an oxygen scavenger as a separate member distinct from the drug-containing adhesive patch. Further, the amount of oxygen gas may be 4 L/mg or less per amount of a drug in the drug-containing adhesive patch.


A composition for production of a crosslinkable pressure-sensitive adhesive for skin, obtained by dissolving in a solvent 100 parts by weight of an acrylic copolymer (copolymer A) comprising a (meth)acrylic acid alkyl ester as the main constituent component and 3-45 wt % diacetoneacrylamide as an essential constituent component, and containing no free carboxyl groups, and 0.1-30 parts by weight of an acrylic copolymer (copolymer B) comprising a (meth)acrylic acid alkyl ester as the main constituent component and a primary amino group and/or carboxyhydrazide group on a side chain, and containing no free carboxyl groups.


Patent
NIPRO Patch Co. | Date: 2015-11-04

The objective of the present invention is to provide a method of preventing an oxygen-caused alteration of a drug in an adhesive patch enclosed inside a packaging container. The present invention is a package body comprising a packaging container and a drug-containing adhesive patch enclosed inside the packaging container, wherein the amount of oxygen gas inside the package body is 20 L or less, and the concentration of oxygen gas is 17.0 to 25.0 vol%. This packaging does not have to contain an oxygen scavenger as a separate member distinct from the drug-containing adhesive patch. Further, the amount of oxygen gas may be 4 L/mg or less per amount of a drug in the drug-containing adhesive patch.


Patent
Nipro Patch Co. | Date: 2012-08-24

The purpose of the present invention is to provide a hydrous adhesive skin patch which contains lidocaine and can be applied in a uniform thickness easily. This hydrous adhesive skin patch comprises a support and an adhesive agent layer arranged on the support, wherein lidocaine or a pharmacologically acceptable salt thereof, a hydrophilic adhesive agent, and diethylene glycol or a diethylene glycol monoalkyl ether are contained in the adhesive agent layer. The diethylene glycol monoalkyl ether is preferably at least one compound selected from the group consisting of diethylene glycol monomethyl ether, diethylene glycol monoethyl ether and diethylene glycol monobutyl ether.

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